Rapid Effective Reduction by Microwave-Irradiated Thermal Reaction for Large-Scale Production of High-Quality Reduced Graphene Oxide

2021 ◽  
Author(s):  
Ok-Kyung Park ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Thermal Reaction ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Reduced Graphene ◽  
Effective Reduction

Large-scale production of high-quality reduced graphene oxide

2013 ◽  
Vol 233 ◽  
pp. 297-304 ◽  
Author(s):  
Shichoon Lee ◽  
Sung Hun Eom ◽  
Jin Suk Chung ◽  
Seung Hyun Hur
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Reduced Graphene

scholarly journals A Green Approach for Highly Reduction of Graphene Oxide by Supercritical Fluid

2014 ◽  
Vol 1004-1005 ◽  
pp. 1013-1016 ◽  
Author(s):  
Chang Yi Kong ◽  
Yuuki Shiratori ◽  
Takeshi Sako ◽  
Futoshi Iwata
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Supercritical Fluid ◽  
Large Scale ◽  
Scale Production ◽  
Graphene Oxides ◽  
Practical Applications ◽  
Green Approach ◽  
Large Scale Production ◽  
Reduced Graphene

A green method to synthesize the reduced graphene oxide using supercritical fluid has been developed, which is an environmentally friendly and efficient route. The reduced graphene oxide has been examined by X-ray diffraction, Raman spectroscopy. We have also studied the effects of reduction temperatures and supercritical fluids on the electrical properties of reduced graphene oxide. It was found that ethanol has higher reducing capability than CO2at all temperatures (200 - 400°C) examined in this study for graphene oxide reduction. As a result, reduced graphene oxide (6300 S/m) from supercritical ethanol treatment has 5 times as high conductivity as that from supercritical CO2treatment at the reduction temperature of 400°C. This green process is applicable for large scale production of reduced graphene oxides for various practical applications.

Simple approach for large-scale production of reduced graphene oxide films

2014 ◽  
Vol 243 ◽  
pp. 340-346 ◽  
Author(s):  
Ming Zhang ◽  
Bin Gao ◽  
Diana C. Vanegas ◽  
Eric S. McLamore ◽  
June Fang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Oxide Films ◽  
Simple Approach ◽  
Scale Production ◽  
Large Scale Production ◽  
Reduced Graphene

A Green Approach to the Synthesis of Reduced Graphene Oxide using Sodium Humate

2016 ◽  
Vol 230 (12) ◽  
Author(s):  
Ning Xiang ◽  
Jiguo Huang ◽  
Honggang Zhao ◽  
Chengjia Liu ◽  
Xingjuan Liu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Scale Production ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sodium Humate ◽  
Green Approach ◽  
Large Scale Production ◽  
Reduced Graphene

AbstractA green and simple chemistry approach was demonstrated to prepare reduced graphene oxide (rGO) using sodium humate (SH) as the reducing agent. Without using toxic and harmful chemicals, this method is environmentally friendly and suitable for the large-scale production of graphene. At first, the improved Hummers method to oxidize graphite for the synthesis of graphene oxide (GO) was applied, and then the as-prepared GO was reduced by SH to form rGO. Characterization was performed using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectrometry (XPS) and Raman spectra. The intensity ratio of the D and G band (I

scholarly journals Investigation of the Reduction of Graphene Oxide by Lithium Triethylborohydride

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Guangyuan Xu ◽  
Jenny Malmström ◽  
Neil Edmonds ◽  
Neil Broderick ◽  
Jadranka Travas-Sejdic ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Chemical Reduction ◽  
Colloidal Suspension ◽  
Cost Effective ◽  
Scale Production ◽  
Large Scale Production ◽  
Reduced Graphene ◽  
Ft Ir

The chemical reduction of a wet colloidal suspension of graphene oxide is a cost-effective and adaptable method for large scale production of “quasi” graphene for a wide variety of optoelectronic applications. In this study, modified Hummers’ procedure was used to synthesize high quality graphene oxide at 50°C. This modified protocol thus eliminates the potentially hazardous second high-temperature step in Hummers’ method for the production of GO. Furthermore, the reduction of graphene oxide by lithium triethylborohydride is demonstrated for the first time. According to FT-IR, UV-Vis, TGA, Raman, SEM/EDS, and AFM results, the reduced graphene oxide (LiEt3BH-RGO) has properties comparable to other reduced graphene oxide products reported in the literature.

Large scale production of highly conductive reduced graphene oxide sheets by a solvent-free low temperature reduction

Carbon ◽  
2014 ◽  
Vol 69 ◽  
pp. 327-335 ◽  
Author(s):  
Kyu Hyung Lee ◽  
Byeongno Lee ◽  
Son-Jong Hwang ◽  
Jae-Ung Lee ◽  
Hyeonsik Cheong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Large Scale ◽  
Solvent Free ◽  
Scale Production ◽  
Temperature Reduction ◽  
Large Scale Production ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

scholarly journals Novel Green Synthesis of Graphene Layers using Zante Currants and Graphene Oxide

2018 ◽  
Vol 34 (6) ◽  
pp. 2832-2837 ◽  
Author(s):  
Mohd Zaid Ansari ◽  
Mohammad Nadeem Lone ◽  
Shabana Sajid ◽  
Weqar Ahmad Siddiqui
Keyword(s):  
Graphene Oxide ◽  
Large Scale ◽  
Uv Spectrophotometry ◽  
Scale Production ◽  
Graphene Layers ◽  
Large Scale Production ◽  
Reduced Graphene ◽  
Reduction Effect ◽  
First Time ◽  
Facile Route

The present work shows a facile route for the preparation of graphene layers and for the first time Zante currants extract used for the effective deoxygenation of graphene oxide has been reported. Zante currants (ZC) extract reduce effectively GO into few layered structures of graphene (FLG). The morphology of few layers graphene and graphene oxide (GO) were investigated by SEM and TEM. Reduction effect on graphene oxide confirm by other technique like Raman, FTIR, XRD and UV spectrophotometry. This procedure keep away the use of hazardous chemicals, thus providing a new hope for large scale production of chemically reduced graphene.

Solvent-free mechanochemical synthesis of graphene oxide and Fe3O4–reduced graphene oxide nanocomposites for sensitive detection of nitrite

2015 ◽  
Vol 3 (30) ◽  
pp. 15529-15539 ◽  
Author(s):  
G. Bharath ◽  
Rajesh Madhu ◽  
Shen-Ming Chen ◽  
Vediyappan Veeramani ◽  
D. Mangalaraj ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Chemistry ◽  
Reduced Graphene Oxide ◽  
Functional Properties ◽  
Mechanochemical Synthesis ◽  
Large Scale ◽  
Solvent Free ◽  
Sensitive Detection ◽  
High Quality ◽  
Reduced Graphene

Large-scale defect-free high quality graphene was synthesized by a mechanochemical process. The surface chemistry and functional properties of the Fe3O4 nanoparticles anchored on graphene were studied for the sensitive detection of nitrite from various water sources.

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